GestureDetector绑定到一个TextView中的片段 [英] GestureDetector bound to a TextView in a fragment

问题描述

所以我有一个驻留在我的活动片段里面的TextView 。我想添加一个 gestureDetector 到的TextView ，以便用户可以进行，涉及到它的某些操作。我特别要轻扫或一扔。我的code是如下：

 公共无效onViewCreated（查看视图，捆绑savedInstanceState）
{
    myGestDetector =新GestureDetector（getActivity（），新GestureDetector.SimpleOnGestureListener（））;
    TextView的mainTextView =（TextView中）getView（）findViewById（R.id.HourCount）。
    mainTextView.setOnTouchListener（新View.OnTouchListener（）{
        @覆盖
        公共布尔onTouch（查看视图，MotionEvent motionEvent）{
            myGestDetector.onTouchEvent（motionEvent）;
            返回false;
        }    }）;}
@覆盖
公共布尔onDown（MotionEvent motionEvent）{
    返回false;
}@覆盖
公共无效昂秀preSS（MotionEvent motionEvent）{}@覆盖
公共布尔onSingleTapUp（MotionEvent motionEvent）{
    返回false;
}@覆盖
公共布尔onScroll（MotionEvent motionEvent，MotionEvent motionEvent2，浮动V，V2浮动）{
    返回false;
}@覆盖
公共无效onLong preSS（MotionEvent motionEvent）{}
@覆盖
公共布尔onFling（MotionEvent EVENT1，MotionEvent EVENT2，浮velocityX，浮velocityY）{
    Log.d（手势，onFling：+ event1.toString（）+ event2.toString（））;
    返回true;
}
 

问题是，我不能得到任何这些火灾。我试着做一扔了好几次，但日志不显示，我呼吁在 onFling 。没有人有任何想法，我做错了什么？

解决方案

  mainTextView.setOnTouchListener（新View.OnTouchListener（）{
    @覆盖
    公共布尔onTouch（查看视图，MotionEvent motionEvent）{
        myGestDetector.onTouchEvent（motionEvent）;
        返回false; //从这里或更好的回报myGestDetector.onTouchEvent（motionEvent）返回true;
    }}）;
 

通过返回true安卓知道你是消费触摸事件
请参阅： onFling为一个TextView不工作

编辑：

  myGestDetector =新GestureDetector（getActivity（），新GestureListener（））;
 

做一个私有的类像这样

 私有类GestureListener实现GestureDetector.OnGestureListener {        公共GestureListener（）{
        }        @覆盖
        公共布尔onDown（MotionEvent motionEvent）{
            返回false;
        }        @覆盖
        公共无效昂秀preSS（MotionEvent motionEvent）{        }        @覆盖
        公共布尔onSingleTapUp（MotionEvent motionEvent）{
            返回false;
        }        @覆盖
        公共布尔onScroll（MotionEvent motionEvent，MotionEvent motionEvent2，浮动V，V2浮动）{
            返回false;
        }        @覆盖
        公共无效onLong preSS（MotionEvent motionEvent）{        }
        @覆盖
        公共布尔onFling（MotionEvent EVENT1，MotionEvent EVENT2，浮velocityX，浮velocityY）{
            Log.d（手势，onFling：+ event1.toString（）+ event2.toString（））;
            返回true;
        }
    }
 

So I have a TextView that resides inside a fragment in my activity. I'm trying to add a gestureDetector to that TextView so that the user can carry out certain actions that pertain to it. I especially want the swipe or fling. My code is as follows:

public void onViewCreated(View view, Bundle savedInstanceState)
{       
    myGestDetector = new GestureDetector(getActivity(), new    GestureDetector.SimpleOnGestureListener());
    TextView mainTextView = (TextView)getView().findViewById(R.id.HourCount);
    mainTextView.setOnTouchListener(new View.OnTouchListener() {
        @Override
        public boolean onTouch(View view, MotionEvent motionEvent) {
            myGestDetector.onTouchEvent(motionEvent);
            return false;
        }

    });

}
@Override
public boolean onDown(MotionEvent motionEvent) {
    return false;
}

@Override
public void onShowPress(MotionEvent motionEvent) {

}

@Override
public boolean onSingleTapUp(MotionEvent motionEvent) {
    return false;
}

@Override
public boolean onScroll(MotionEvent motionEvent, MotionEvent motionEvent2, float v, float v2) {
    return false;
}

@Override
public void onLongPress(MotionEvent motionEvent) {

}
@Override
public boolean onFling(MotionEvent event1, MotionEvent event2, float velocityX, float velocityY) {
    Log.d("GESTURES", "onFling: " + event1.toString()+event2.toString());
    return true;
}

The issue is that I cannot get any of these to fire. I've tried doing the fling several times, but the log isn't showing that I am calling the onFling. Does anyone have any idea what I'm doing wrong?

解决方案

 mainTextView.setOnTouchListener(new View.OnTouchListener() {
    @Override
    public boolean onTouch(View view, MotionEvent motionEvent) {
        myGestDetector.onTouchEvent(motionEvent);
        return false;  // Return true from here or better return  myGestDetector.onTouchEvent(motionEvent);
    }

});

By returning true android knows that you are consuming touch event Refer : onFling for a TextView not working

Edit :

myGestDetector = new GestureDetector(getActivity(), new GestureListener());

make a private class like this

private class GestureListener implements GestureDetector.OnGestureListener {

        public GestureListener() {
        }

        @Override
        public boolean onDown(MotionEvent motionEvent) {
            return false;
        }

        @Override
        public void onShowPress(MotionEvent motionEvent) {

        }

        @Override
        public boolean onSingleTapUp(MotionEvent motionEvent) {
            return false;
        }

        @Override
        public boolean onScroll(MotionEvent motionEvent, MotionEvent motionEvent2, float v, float v2) {
            return false;
        }

        @Override
        public void onLongPress(MotionEvent motionEvent) {

        }
        @Override
        public boolean onFling(MotionEvent event1, MotionEvent event2, float velocityX, float velocityY) {
            Log.d("GESTURES", "onFling: " + event1.toString()+event2.toString());
            return true;
        }
    }

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